Mirando City is a census-designated place in Webb County, Texas, United States. The population was 166 at the 2010 census. The town gets its name from Nicolás Mirando, a Spanish land grantee. The population of Mirando City was highest in 1929, at an estimated 1500.The peyote cactus thrives in and around Mirando City and nearby Oilton, and is a clandestine source of income for residents. Peyoteros have harvested peyote in Mirando City for over a hundred years.Mirando City was the center of the South Texas Oil Boom, launched in 1921 by the industrialist Oliver Winfield Killam of Laredo.